56=-7(r-13)

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Solution for 56=-7(r-13) equation: 



56=-7(r-13)

We move all terms to the left:

56-(-7(r-13))=0



We calculate terms in parentheses: -(-7(r-13)), so:

-7(r-13)

We multiply parentheses

-7r+91

Back to the equation:

-(-7r+91)



We get rid of parentheses

7r-91+56=0

We add all the numbers together, and all the variables

7r-35=0

We move all terms containing r to the left, all other terms to the right

7r=35

r=35/7

r=5

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